Alaskan Bull Worm

The Alaskan Bull Worm only appears in one episode as the main antagonist who destroyed and ate all of Bikini Bottom. He has so far only appeared in one episode which was "Sandy, SpongeBob, and the Worm." He is a pink underwater worm who had attempted to eat Sandy and SpongeBob and the rest of Bikini Bottom.

The Alaskan Bull Worm has shown to be a huge disaster for Bikini Bottom, as he destroyed almost the whole town and eventually later did by falling on it, along with eating houses, objects, cars, and more.